Frequencies for classification variable in enfrep20140312 dataset :

Classificat |
        ion |      Freq.     Percent        Cum.
------------+-----------------------------------
    Class I |         34       22.37       22.37
   Class II |        113       74.34       96.71
  Class III |          5        3.29      100.00
------------+-----------------------------------
      Total |        152      100.00

by Jean Roth , jroth@nber.org , 18 Dec 2015